Rapeseed cake in heavy turkey fattening
1996
Vymola, J. | Kodes, A. | Obadalek, J. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic))
A trial was conducted to test the use of rapeseed 00 cake in feed mixture for (Large White) turkeys of heavy type which replaced soybean meal. Three levels of rapesseed cake - 5, 10, 15 % were tested, as corresponding to an amount of 1.3; 2.6; 3.9 mmol/kg dietary glucosinolates. Control feed mixture did not contain any rapeseed. Growth indicators documented balanced weights on the 56th day of age, without any relationship to dietary rapeseed content. Female turkeys showed a trend of growth depression in all experimental groups on the 98th day, while in male turkeys the growth was higher in group with 5 % rapeseed only, the groups with 10-15 % rapeseed exhibited insignificantly lower weight against control. The indicator feed conversion did not show any significant differences. Dressing percentage did not change. Economic analysis suggested that the dietary glucosinolate level up to 4 mmol/kg does not lead to worse feed conversion and it does not influence the carcass quality of heavy turkeys.
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